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Date: Fri, 15 May 2015 17:19:52 -0500
From: Brian King <brking@linux.vnet.ibm.com>
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To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Subject: Re: [RFC/PATCH v3] powerpc/iommu: Support "hybrid" iommu/direct DMA
 ops for coherent_mask < dma_mask
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Cc: Daniel Kreling <kreling@linux.vnet.ibm.com>, linuxppc-dev@lists.ozlabs.org,
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On 05/14/2015 05:03 PM, Benjamin Herrenschmidt wrote:
> This patch adds the ability to the DMA direct ops to fallback to the IOMMU
> ops for coherent alloc/free if the coherent mask of the device isn't
> suitable for accessing the direct DMA space and the device also happens
> to have an active IOMMU table.
> 
> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> ---
> 

Thanks. This one works fine for me with mpt2sas.

Tested-by: Brian King <brking@linux.vnet.ibm.com>

-Brian

-- 
Brian King
Power Linux I/O
IBM Linux Technology Center